利用化工废液合成新型捕收剂应用研究
发布时间：2018-10-20 12:01
【摘要】：我国虽然是世界上铜资源较多的国家之一,但从整体的角度来讲,我国铜资源比较贫乏呈现富矿少贫矿多的态势。据报告数据,我国富矿仅占全部铜矿的35%,贫矿占全部铜矿的65%。同时铜矿分布比较分散,铜储量排在前列的省份有江西、西藏、云南、甘肃、安徽等,其中江西铜储量排在我国铜储量第一位,西藏铜储量排在第二位。我国的铜金属矿具有以下特点：矿床规模小,低品位、共生伴生金属种类多,富矿地处偏远,开发手段落后,利用效率低。选矿药剂的种类有很多,但大部分都是有机合成的产品,合成的有机选矿药剂需要消耗很多的化工原料。在矿山应用时,不仅增加了选矿成本,还会消耗大量的能源。从另一角度考虑,化工行业生产产品后的化工废弃物由于处理不当会对环境造成不可逆的伤害。因此利用化工废液合成选矿药剂,不仅可以减少这些废弃物对大自然的伤害,而且可以大幅降低矿厂的选矿成本,既可以获得不错的社会效益,也可以获得更高经济效益。本论文以新疆某地化工厂废液为研究对象,该废液具有成分复杂、污染物浓度高等特点。通过化学分析,发现该废液中含有C=C、C=S、C-N、C-O-C等官能团,对该废液进行捕收剂探索试验,发现该废液对硫化铜铁矿具有捕收能力。本项目对该废液进行回收利用,制成新型捕收剂JL01来代替丁基黄药,并在当地某铜铁矿使用成功。纯矿物试验研究结果证实,JL01作捕收剂的浮选体系中,pH值在9.0～11区间段之间,黄铜矿的回收率都在较高的数值,该区间的平均值都高于90%。pH值在10.0～11.0区间段之间,黄铜矿的回收率最好,说明黄铜矿的纯矿物在JL01的体系中疏水性很好；而磁黄铁矿的浮选回收率在整个ph区间段内均低于50%,说明JL01对黄铜矿物有较好的选择捕收性能。综上,在适宜的碱性条件下,捕收剂JL01黄铜矿物的捕收能力有明显优越性。通过捕收剂对比试验,JL01具有更好的捕收性能,铜粗选时JL01用量为45克／吨,精选时用量为5克／吨。通过全开路对比试验和闭路试验,JL01做捕收剂时铜的品位及回收率都略高于黄药做捕收剂时铜的品位及回收率,JL01可以替代黄药作为该矿山的捕收剂,可为该矿山减少成本,提高经济效益。
[Abstract]:Although China is one of the countries with more copper resources in the world, from the overall point of view, the relatively poor copper resources in China present the situation of rich mineral resources, less mineral resources and more mineral resources. According to the reported data, rich ore accounts for only 35% of all copper deposits in China, and poor ore accounts for 65% of all copper mines. The copper reserves in Jiangxi, Tibet, Yunnan, Gansu and Anhui are the first in China and the second in Tibet. The copper metal deposits in China have the following characteristics: small scale, low grade, many kinds of associated metals, remote rich deposits, backward development methods and low utilization efficiency. There are many kinds of mineral processing chemicals, but most of them are organic synthetic products, and the synthetic organic mineral processing chemicals need a lot of chemical raw materials. In mine application, it not only increases the dressing cost, but also consumes a lot of energy. From another point of view, the chemical waste after production in chemical industry will cause irreversible damage to the environment due to improper treatment. Therefore, using chemical waste liquid to synthesize mineral processing agent can not only reduce the harm of these wastes to nature, but also greatly reduce the mineral processing cost of ore plant, which can not only obtain good social benefit, but also obtain higher economic benefit. In this paper, the waste liquid of a chemical plant in Xinjiang is studied, which has the characteristics of complex composition and high pollutant concentration. By chemical analysis, it was found that the waste liquid contained some functional groups, such as CZC, C, N, C, O, C, and so on. The collector experiment was carried out on the waste liquid, and it was found that the waste liquid had the ability of collecting copper sulphide iron ore. The waste liquor was recycled and made into a new collector JL01 instead of Ding Ji xanthate and successfully used in a local copper mine. The experimental results of pure minerals show that in the flotation system with JL01 as collector, the recovery of chalcopyrite is higher than that of JL01 in the range of 9.0 ~ 11, and the average value of this interval is higher than that of 90%.pH in the range of 10.0 ~ 11.0. The recovery of chalcopyrite is the best, which indicates that the pure mineral of chalcopyrite has good hydrophobicity in JL01 system, while the flotation recovery of pyrrhotite is lower than 50% in the whole range of ph, which indicates that JL01 has better selective capture performance for brass minerals. In conclusion, the collector JL01 has obvious superiority in collecting ability under the suitable alkaline condition. Through the comparative test of collector, JL01 has better capture performance. The dosage of JL01 is 45 g / ton in coarse copper separation and 5 g / t in cleaning. Through the open circuit contrast test and closed circuit test, the copper grade and recovery rate of JL01 as collector is slightly higher than that of xanthate as collector. JL01 can replace xanthate as collector of this mine and can reduce the cost of the mine. Improve economic efficiency.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD923.13
本文编号：2283115
[Abstract]:Although China is one of the countries with more copper resources in the world, from the overall point of view, the relatively poor copper resources in China present the situation of rich mineral resources, less mineral resources and more mineral resources. According to the reported data, rich ore accounts for only 35% of all copper deposits in China, and poor ore accounts for 65% of all copper mines. The copper reserves in Jiangxi, Tibet, Yunnan, Gansu and Anhui are the first in China and the second in Tibet. The copper metal deposits in China have the following characteristics: small scale, low grade, many kinds of associated metals, remote rich deposits, backward development methods and low utilization efficiency. There are many kinds of mineral processing chemicals, but most of them are organic synthetic products, and the synthetic organic mineral processing chemicals need a lot of chemical raw materials. In mine application, it not only increases the dressing cost, but also consumes a lot of energy. From another point of view, the chemical waste after production in chemical industry will cause irreversible damage to the environment due to improper treatment. Therefore, using chemical waste liquid to synthesize mineral processing agent can not only reduce the harm of these wastes to nature, but also greatly reduce the mineral processing cost of ore plant, which can not only obtain good social benefit, but also obtain higher economic benefit. In this paper, the waste liquid of a chemical plant in Xinjiang is studied, which has the characteristics of complex composition and high pollutant concentration. By chemical analysis, it was found that the waste liquid contained some functional groups, such as CZC, C, N, C, O, C, and so on. The collector experiment was carried out on the waste liquid, and it was found that the waste liquid had the ability of collecting copper sulphide iron ore. The waste liquor was recycled and made into a new collector JL01 instead of Ding Ji xanthate and successfully used in a local copper mine. The experimental results of pure minerals show that in the flotation system with JL01 as collector, the recovery of chalcopyrite is higher than that of JL01 in the range of 9.0 ~ 11, and the average value of this interval is higher than that of 90%.pH in the range of 10.0 ~ 11.0. The recovery of chalcopyrite is the best, which indicates that the pure mineral of chalcopyrite has good hydrophobicity in JL01 system, while the flotation recovery of pyrrhotite is lower than 50% in the whole range of ph, which indicates that JL01 has better selective capture performance for brass minerals. In conclusion, the collector JL01 has obvious superiority in collecting ability under the suitable alkaline condition. Through the comparative test of collector, JL01 has better capture performance. The dosage of JL01 is 45 g / ton in coarse copper separation and 5 g / t in cleaning. Through the open circuit contrast test and closed circuit test, the copper grade and recovery rate of JL01 as collector is slightly higher than that of xanthate as collector. JL01 can replace xanthate as collector of this mine and can reduce the cost of the mine. Improve economic efficiency.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD923.13
【参考文献】
相关期刊论文 前1条
1 丁大森,顾愚;应用Y89提高铜绿山原生矿分选指标的研究[J];有色金属(选矿部分);1999年05期
，本文编号：2283115
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